The current Tiger Arcade beta is apparently a version of Final Burn (based on the new rom list posted by dev), but most of the Capcom 3 games like Red Earth and Street Fighter 3 load up, but crash when getting ready to play. I have a tested and working Final Burn rom set for reference.
Not tested the non Capcom 3 games yet, besides the roms already supported. BTW, the reason some roms stopped working for some is the Final Burn rom set is a bit pickier than the current official version, so depends on what roms you have.
Since the beta does appear to be based on a different rom set, it seems more prudent for the dev to make this a different app, rather than an update.
Call it "Tiger Burn".